From: Philipp Reisner <philipp.reisner@linbit.com>
Date: Fri, 2 Oct 2009 02:40:09 +0000 (+0000)
Subject: dst/connector: Disallow unpliviged users to configure dst
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5788c56891cfb310e419c4f9ae20427851797431;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

dst/connector: Disallow unpliviged users to configure dst

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/staging/dst/dcore.c b/drivers/staging/dst/dcore.c
index 3943c91e6c96..ee1601026fb0 100644
--- a/drivers/staging/dst/dcore.c
+++ b/drivers/staging/dst/dcore.c
@@ -855,6 +855,11 @@ static void cn_dst_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp)
 	struct dst_node *n = NULL, *tmp;
 	unsigned int hash;
 
+	if (!cap_raised(nsp->eff_cap, CAP_SYS_ADMIN)) {
+		err = -EPERM;
+		goto out;
+	}
+
 	if (msg->len < sizeof(struct dst_ctl)) {
 		err = -EBADMSG;
 		goto out;